Mining crystals

Mining crystals are special consumables fitted to Tech II mining harvesters and Deep Core mining lasers to massively increase the yield of these mining modules, with certain drawbacks depending on the type of crystal used.

Crystal compatibility

Following the release of Patch 19.11, mining crystals in EVE were fundamentally changed. Prior to Patch 19.11, every ore had its own unique Tech I and II crystal. Now, standard ores are separated into 6 "tiers" with each Tier having 3 types of crystals, further divided into their Tech I and II variants.

Asteroid Ores

Mining crystal	Compatible ores
Simple Asteroid Mining Crystals	Veldspar [ MorduniumPure pyerite ore ] Scordite Pyroxeres Plagioclase
Coherent Asteroid Mining Crystals	Omber [ YtiriumPure isogen ore ] Kernite Jaspet Hemorphite Hedbergite
Variegated Asteroid Mining Crystals	Gneiss Dark Ochre Crokite
Complex Asteroid Mining Crystals	Bistot Arkonor [ EifyriumPure zydrine ore ] Spodumain [ DuciniumPure megacyte ore ]
Mercoxit Asteroid Mining Crystals	Mercoxit
Abyssal Asteroid Mining Crystals	Bezdnacine Rakovene Talassonite

Moon Ores

Moon mining crystals only have a visual change to put them in sync with asteroid crystals, and are still compatible with the same tiers of moon ores (ubiquitous, common, uncommon, rare, exceptional) as crystals pre 19.11. See moon mining for more details on specific ores.

Crystal types

Type A

Type A crystals have moderate yield and residue bonuses, and are the most balanced crystals for standard mining operations.

Crystal	Tech	Cycle time	Volatility	Residue probability	Residue multiplier	Yield modifier	Duration Muliplier
Simple Asteroid Mining Crystal Type A I	Tech I	1x	10%	+0%	0	1.5x	1.0x
Simple Asteroid Mining Crystal Type A II	Tech II	1x	12%	+3.6%	0	1.8x	1.0x

Type B

Type B crystals have much improved yield bonuses, however, they also get a correspondingly high residue probability level to match. These crystals therefore will have a high mining yield but waste more ore in the process. The lower duration results in faster extraction.

Crystal	Tech	Cycle time	Volatility	Residue probability	Residue multiplier	Yield modifier	Duration Muliplier
Simple Asteroid Mining Crystal Type B I	Tech I	0.9x	15%	+20%	0	1.5x	0.9x
Simple Asteroid Mining Crystal Type B II	Tech II	0.8x	19.6%	+30%	0	1.8x	0.8x

Type C

Type C crystals are not for standard mining operations. They have extremely low yields with extremely high residue, making them suitable for strategic ore removal or for offensive mining operations against hostile player space.

Crystal	Tech	Cycle time	Volatility	Residue probability	Residue multiplier	Yield modifier	Duration Muliplier
Simple Asteroid Mining Crystal Type C I	Tech I	1x	24%	+40%	18x	0.25x	1.0x
Simple Asteroid Mining Crystal Type C II	Tech II	1x	30%	+59%	28x	0.2x	1.0x

External links

• Patchnotes for 19.11
• Github project of Mining Yield - Further math on yields, thanks to Wilm0rien based on his reddit post for yields, updated to patch 19.11.